Shortening supply trunk?

Quote:

Originally Posted by shuship

is it possible to knock out one of the "Vs" on the truss, then reinforce with 2-3 vertical runs in order to run the supply?

Nope.

They are engineered trusses. They are designed to bear the load as they are built. The webs spread the weight over a large area.
A couple 2x4's in a vertical position won't spread the weight, and will cause stress failure.

You alter them. And they will NOT have the same load bearing strength.